Help Id weird mushrooms please

[Dexters Reef]

I have had these for about a year, and forget what they are. I have about 9 heads, some are 1", some are 2". They have stalks, and close at night. I think they are a form of mushroom, but they feel like a leather coral when you touch them, and then there is the stalk part that I noramlly dont see on mushrooms. Any ideas?

I had them in my 14G biocube under stock PC lighting and they were doing great, but the bulbs are old and I really dont have any other coral in there so I didnt want to spend the money on bulbs. They started to lose color. I moved them to my 75G reef and that lighting is intense. I have moved them to a shaded area, but am hoping with a proper ID I can figure out their care requirements.

Thank you!

For some reason my attachments arent showing up, if they dont work tomorrow Ill create a offsite photo hosting account and post links

 

[Dexters Reef]

Try 2 with the attachments

 

[organism]

Those are Palythoa grandis from Florida, basically really big zoanthids, very cool!

 

[Dexters Reef]

Those are Palythoa grandis from Florida, basically really big zoanthids, very cool!

Thank you!! A quick google search confirmed it! They definately werent sold to me as that. A RC search tells me they can be fed, and today I noticed their mouths were open. All along I thought they were photosynthetic only. Time to feed, Thanks again for the quick reply!

 

[organism]

Thing is, sometimes feeding can backfire, it can raise nitrates and phosphates in the tank which stops corals from growing and makes them brown out. If you start feeding them I'd do so only a little bit at a time while keeping track of the water quality...

 

[Dexters Reef]

I actually have the opposite problem. They have been bleaching and im trying to get them to recover.

Had them for a year under 48w pc lighting at the top of my biocube 14. They thrived with no attention from me. Now the lights are a year old and I noticed my Xenia was staying closed and these guys were losing color and bleaching.

I'm getting rid of the biocube and don't want to spend 40$ on bulbs, so I transferred the coral into my 75g, but that's 716w of metal halide and t5ho. Have them in the shade hoping they get the color back, don't really know what to do so I gave them some mysis which they gobbled up! I have a low bioload, only 3 fish and two are small, and already target feed my other coral every other day

Phosphates - undetectable
Nitrates, nitrites, ammonia - 0

Have a 30" sump, with refugium, and a skimmer for a 100-160g tank that combined keeps my levels perfect.